Last



Patented Jan. 12, 19H26.`

y UNITED.-STA'IESI PATENT OFFICE.

GEORGE CLAUSING, OF PORTSMOUTH,`OHIO ASSIGNOR TO THE VULCAN LAST COM- PANY, OF PORTSMOUTH, OHIO, A- CORPORATION OF OHIO. v' 1 LAST.

Original application filed March 26, 1924, Serial N o. 701,986. Divided and this application iiled September 29, 1924. Serial No. 740,536.

i To all fui/wm t may concern.'

Be it known that I, Gnoncn CLAnsINc, a

i citizen of the United States, residing at part of the last.

Portsmouth, in the county of Scioto and State of Ohio, have invented certain new and useful Improvements in Lasts, of which the following is a specification, reference being had therein to the accompanying drawing.

My invention relates to lasts, and the present application is a division of my application led March 26, 19221, Serialy No. 701,986.

It is the obj ect of my invention to provide a last having spring links so that the last parts will remain in their expanded or collapsed condition and resist movement from one position to the other.

It is a further object of my invention to provide a dual link construction so arranged that the resiliency and resistance of the link parts that must be overcome will be uniform, no matter whether the parts are being moved from expanded to collapsed position or vice-versa.

It is a still further object of my invention to provide resilient links which will readily return to their original fo'rm after the last parts pass by their dead center, as the parts are so arranged that a line drawn between the points of attachment of the links to the last parts will pass over the pivotal center about which the last parts move.

Referring to the drawings:

Figure 1 is a section through the last in its expanded position.

Figure 2 is a similar view of its collapsed position.

Referring to the drawings in detail:

1 designates the toe part and 2 the heel These Jtwo parts are provided with a knuckle or ball and socket joint, of which 3 is the ball and 4t is the socket. The center of the ball is designated 5 and it is about that center' that the parts 1 and 2 move. The upper portions of these last parts are cut away as at 6 so that the last parts can collapse. The faces 7 limit the movement ofthe last parts in their eX- the last in f panded position.

yThe pins 8 and 9 in the toe and heel parts respectively are located transversely in such parts and they carry links 10 in the form of resilient hooks ywhich have enlarged eyes 11 upon the that the major portion of such hooks is above the line joining theircenters.`

W'hen the last parts pass over dead center or this line joining the centersof the pins 8 and 9 passes over the point l5, links 10 flex suiiiciently to permit of this passage over dead center. Additional resiliency may be found in the last parts them selves if they are made of such material as wood.

By having two links in reverse positions it will be apparent that the resistance will be equalized and be made uniform no matter in which direction the parts are being moved.

It will also be observed that the last parts are cut away as at 12 and 13, so that the movement of the links and the links themselves may be accommodated within the last parts.

The pivotal point indicated on the drawings is only approximate, but it is accurate sufficiently to illustrate the principle of construction as the drawings are not drawn to scale. The fundamental idea is to have the line drawn between the centers of the points of attachment pass over the dead center, which in a sense is the equivalent of the pivotal point.

It will be understood that I desire to comprehend within my invention various modifications which may be found necessary in adapting it to the various requirements of the art.

Having thus fully described my invention, what I claim as new and desire to secure by Letters Patent of the United States, is:

1. In a last, a toe part and a heel part pivoted on one another about a given center forming a joint therebetween `so that the parts can rock on one another about said common center, a link connecting said parts mounted on pins in said parts so arranged that it has no lateral movement on the pins and so formed that it proceeds from one pin upwardly to a point above the other pin and then downwardly to form an angular spring-like hook which is adapted to flex when they last parts pass over the common the resilient center of movement and to hold the parts Y i 2.1n a last, a toe part, a heel part, a joint therebetween so that the parts can rock on one another about a connnon center, a link connecting said parts bent to forni a spring-like hook which is adapted to fie); when the last parts pass over the eonnnon center and to hold the parts in their expanded or collapsed position, and a second hook-like link having the hook oppositely disposed from the first mentioned hook to form an S-shaped construction.

3. In a last, a toe part, a heel part, a joint therebetween so that the parts can rock on one another about a common center, a link connecting said parts bent to form a spring- ]ike hook which is adapted to flex when the last parts pass over the eonnnon center and to hold the parts in their expanded or eollapsed positioin and a second hook-like link having the hook oppositelv disposed from the first mentioned hook, the major portion of said hooks beinp` located to one side of a line drawn between their centers of attachnient to the last parts and formingy an S- shaped consti-notion.

In testimony whereof, I affix my signature.

GEORGE CLAUSI N( 

